require 'json'Here I am using Gambit-C Scheme interpretively. It is very easy to write any structured data in JSON format in the Scheme (or Lisp) code and parse it on the Ruby side. It is also easy to speed things up and compile my program:
s = `gsi extraction.scm -e '(get-proper-names "President Bush moved to South America.")'`
# parse JSON text...
gsc -c extraction.scmwhich both makes the program faster and reduces the startup time down to a few milliseconds. Since the extraction program starts very quickly, this solution is good enough. However, I have been looking at an alternative idea in case I ever need to use a Lisp or Scheme program that has a long startup time. I have not done this yet, but here are my ideas for Gambit-C Scheme:
gsc -link extraction.c
gcc -o extraction extraction.c extraction_.c -lgambc -I/Library/Gambit-C/current/include/ -L/Library/Gambit-C/current/lib/